palettes.gle

Library with additional palettes for Graphics Layout Engine.

Palettes ported by Francois Tonneau (2005).

SUBROUTINE NAMES

inferno z

inferno_text z

magma z

magma_text z

plasma z

plasma_text z

viridis z

viridis_text z

cividis z

cividis_text z

davos z

davos_text z

devon z

devon_text z

oslo z

oslo_text z

SUBROUTINE DETAILS

Pairs of subroutines return the background color and the text color (i.e.,

either black or white, depending on background lightness) for a position z

ranging from 0.0 to 1.0 along the ramp.

PALETTE INFORMATION

For inferno, magma, plasma, and viridis, see:

https://github.com/BIDS/colormap

For cividis, see:

https://github.com/pnnl/cmaputil

For davos, devon, and oslo, see:

http://www.fabiocrameri.ch/colourmaps.php

Palette node definitions.

Each palette involves 18 nodes of rgb values.

inferno

magma

plasma

viridis

cividis

davos

devon

oslo

Computation of each rgb component for z ranging from 0.0 to 1.0.

The values for r, g, b are computed by linear interpolation in RGB space.

sub palettes_r name$ z

sub palettes_g name$ z

sub palettes_b name$ z

Computation of colored background and black/white text foreground.

sub palettes_hue name$ z

sub palettes_text_hue name$ z

Convenient wrapper routines for each palette.

sub cividis z

sub cividis_text z

sub davos z

sub davos_text z

sub devon z

sub devon_text z

sub inferno z

sub inferno_text z

sub magma z

sub magma_text z

sub oslo z

sub oslo_text z

sub plasma z

sub plasma_text z

sub viridis z

sub viridis_text z